From: Eric Dumazet <edumazet@google.com>
Date: Thu, 4 Apr 2013 15:41:27 +0000 (+0000)
Subject: ip_gre: fix a possible crash in parse_gre_header()
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~65^2~199
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=22251c73ca63b5b1050724be9b54910c101a5f30;p=pandora-kernel.git

ip_gre: fix a possible crash in parse_gre_header()

pskb_may_pull() can change skb->head, so we must init iph/greh after
calling it.

Bug added in commit c54419321455 (GRE: Refactor GRE tunneling code.)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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